hey there i am installing a afermarket CD player into my 2005 Pontiac Sunfire 4 door. thisis my first time doin this so srry if im a noob lol. i started off with disconnecting the power the the car by pullin the fuses in the engine block and i cut the wires goin to the stock radio. i striped the wires made the nessesary connections when i was done i had two wires left a black one (which isnt the grounding wire, there r two black wires) and a purple wire. now when i go and turn the key the deck dosent turn on. i checked the voltage with a volt meter its reading 12.3V and im reading it all the way up to the plastic connector tht goes into the back of the deck. first i thought it maybe the deck so i took it back got a new one still the same problem. i dont kno wut it is people say its the grounding, or try a new wire harness. plz help me :)
You cannot just cut into the harness and make it work in this car. You need to have the factory harness repaired that you just cut up and then buy the PROPER GM databus harness to make it work.
-------------
Top Secret, I can tell you but then my wife will kill me.
In vehicles with class 2 data bus; you really should use an aftermarket harness. There is no switched ignition wire in that plug. I would reconect those wires and go buy the proper plug. I know that they are a little pricy; but you could do SERIOUS damage to the cars electrical system. Not to mention your cars computer.
I would go back to the proper part installation before it's too late.
David.
-------------
David Fancher
USACi World Finals 2006
4th Place SQ PRO 601+
There are 2 kinds of harness that you can buy for your car. There is the genaric harness (my shop uses a Metra 99-2003) that will work, and retail is right around $22. You'll need to run a new switched accessory wire to your ignition harness, and you're going to lose a numer of features. You're RAP feature, door chimes, warning bells (keys in ignition, lights left on, etc), change oil light, and you'll also generally throw a code on an OBD-II scanner. You're second option is to go with a harness designed for a class 2 data system (my shop uses the Scosche GMLAN2SR harness). Theses retail around $110, yes you can find them cheaper at places like wal-mart, but keep in mind that you get what you pay for. This will get you a switched accessory without running a new line to the ignition, allow you to keep all your chimes, RAP, warnign bells, etc.